I'd just have the factory Ls7 heads ported. SDPC ported Ls7 heads were down only 10hp VS Mast and I have yet to see any aftermarket head really out do them. I've used Darin Morgan and Chris Frank, there are others such as BES, TSP, WCCH, AI, etc... On the intake, that's on you....... Me personally 102+ Tb on a ported factory intake. Here's Y. MSD for the Ls7 has more higher Rpm range, Holley Low profile Sniper has even more 8k+. On TB choice the biggest 1 that fits.

https://ls1tech.com/forums/dynamome...arisons/1296721-mamo-ported-102-fast-lsxr-ls7-vs-ported-ls7-intake-results.html

https://peakspeedshop.com/Zen_Cart/...m/Zen_Cart/index.php?main_page=product_info&cPath=65_68_130_133&products_id=494

 

Thanks

Any idea on flow #s with the SDPC ported heads?

 

If you keep that cam and only change the heads and maybe the intake, you likely will spend a lot of money for not much return. The stock LS7 head flows very well as is. Naturally gains can be made with porting, but spending thousands on a different head and expecting to drop a couple tenths, or more, doesn't seem to me as the best way to spend money.


I have a set of LSX-LS7 heads that originally came from WCCH, but I had my local guy do a little work to them. We put them on the flow bench next to a set of OEM LS7 heads and a set of Mast Black Label heads. The numbers, while better then the OEM heads by a decent amount, were really close.


My Heads/Hi Ram/and custom grind cam from Tooley are all for sale as I'm swapping over to a turbo setup. Probably too high compression (14:1) for running pump gas, but I thought I'd throw it out there.


Good luck with your goals.


My only suggestion is to change the cam before changing the heads.

 

What times & MPH did you run with that setup?

 

Tony Mamo's hand ported MSD intake has apparently picked up 4mph in some vettes over the stock ls7 intake. I don't think it's cheap.

If i'm going for an all out effort i would get a CID ls7 single plane and use either injected tb or dominator and sealed off to a hood scoop.

 

1.27/9.45@141 with a really loose converter at 3050lbs.
C5 corvette TH400/3.73 gear

 

I had a larger cam before the BTR III. And it was slower. So I actually picked up et with the III. How big is what you have? And your opinion on why it would be better.

 

And how much for your setup?

 

MSD ported by Anyone is over Priced 2 me also *Love Mamo, but now that I'm older No longer impressed and overpriced. $1500 ported MSD vs Holley sniper $600 with more airflow and higher rpm range.

Flow# numbers aren't everthing also most times inflated for sales. CORRECT* CSA for the engine Size and Rpm range.

 

This guy picked up 3mph with ported mamo and he's just one of many and i don't think they're all shilling for tony. Sniper might flow more but has anyone yet proven it work at the track on a n/a setup like his ported msd does

https://ls1tech.com/forums/dynamome...results-comparisons/1854152-ls7-n-pump-gas-dyno-queens-step-2.html#post19480054

 

I’m not a cam guru by any means. I just know what my setup did. And I’ve tried 3 different cams.

I guess the point of my original post was that, in my opinion, a different cam would make more of an impact than different heads because the LS7 heads flow so well even when stock.

$3,000 heads/Intake/cam plus shipping.

 

Pete, do you have the part numbers for that induction system you are referencing? We are putting together a 427 for the 69 Camaro and I would like to basically copy your setup.

 

The heads are GM LSX-LS7 heads but changed out the intake to Ti and I just replaced the exhaust with stainless. OEM rockers with the trunion kit installed.
The intake is just an Holley Hi Ram. The two have been port matched.
The cam is a custom grind from Brian Tooley. 255/266 .669/.631. 110LSA

 

Curious how you got that Holley Hi-Ram to fit under your Corvette hood?

Could you post some pics?

 

It seems to be a general agreement that the hi ram style intake work better with boost than they do n/a and the plastic style intakes create more mid range and et better for people on milder n/a setups.

C5 Pete did you ever try a fast or msd intake on your combo?

 

I had a FAST, but it was a different cam. Same heads though. Ran 9.86@137

Not really a good comparison.

 

CID intake on n/a pump gas 434ci ..

https://ls1tech.com/forums/generati...iv-external-engine/1912705-super-victor-hi-ram-440ci-rec-port.html#post20028635

 

Frankenstein did the work on the Brodix LS7 castings for that pump gas engine. Good heads but certainly not the best available, gotta pay if you're gonna play! The end result is due to a good working combo done by a very experienced engine builder.

Engine builder's FB page, post was put up back in August https://www.facebook.com/pg/Bammann-Racing-Engines-204673248514/posts/?ref=page_internal

 

Bullshit! Who cant make more hp, or faster ET with Any ported intake vs stock or None ported aftermarket intake. Big Hammers running 9's with 8k + rpm Less than 400 cubes with Sniper: Ls1 sales.com. Mamo is good, he ain't doing Nothing Special. Oh Tony heads/cam/intake made this much on the dyno or went this fast..... So fuuny! How many ET's or dyno test of Factory ported/milled Ls7 heads/cam/intake that run just as fast or Faster with 600+rwhp. Good dude, nothing special or out of this world in terms of a ET or Hp on the dyno. Added that his shit is overpriced. Hell the guy who ports and fixes Ls7 heads on Ls1sales fucked a 434 Mamo package with Normal Ls7 heads he ported.

 

Take it easy man. I asked if you know of a sniper being used in a n/a setup and you gave me one. I never said tony is some god. But his porting of the intake is extensive and it works. Is it over priced? well if other intakes for half the money like the sniper can equal it then sure. Without trying both of them myself back to back i won't call it. All i know is too many people have had good gain from stock ls7 intake to mamo ported msd for it to be BS. Not everyone want to sit and port their own intake and $1500 for 3 or 4 mph gain isn't too bad imo.

The op wants to gain on his setup and i gave him an easy option which will give him a gain. I haven't seen enough of the sniper yet used on milder n/a setups to say it will be as good as a ported MSD.

 

Not tripping Brother. Just all I see on Ls1 sales is

If you want 2 make hp or go fast =Mamo.....so sick of it in Every thread.

Vengeance Racing, Peak, also port aftermarket intakes. Nothing but love Ls7 head brothern.

 

https://cimg9.ibsrv.net/gimg/www.co...671838425083_5822264320137356424_o_91e97826f343967383e1a5334d02553b6a469040.jpg


Guys here is a pictures of my setup now. As you can see. I had to work with the space I have. I run a high flow air filter, and draw air off the windshield. And I made a custom cowl hood to help.

 

https://cimg9.ibsrv.net/gimg/www.co...671838425083_5822264320137356424_o_91e97826f343967383e1a5334d02553b6a469040.jpg


Guys here is a pictures of my setup now. As you can see. I had to work with the space I have. I run a high flow air filter, and draw air off the windshield. And I made a custom cowl hood to help.

That's pretty unique. I like the "outside the box" thinking that went into it.

C5 Pete what kind of RPM with your different setups?

Fast intake shifted at 6800. Hi Ram shifted at 7800.

 

C5 Pete what kind of RPM with your different setups?

 

I prefer the factory LS7 castings (with OE valves) and a port program from Dennis Wheet/Airflow Development. I have a cam/valvetrain system that is pretty much scienced out at this point for them, coupled with Dennis' heads and the MSD it is a very strong combo. I usually keep the compression ratio at factory levels or even slightly less and run them on 91/93 octane. Alot of the big name H/C combos out there claim to make 610+ SAE whp, but it is very rare on a real dyno from what I have seen, and they never run as strong as they should. I think the biggest issue is most of these head porters are just making the ports too large chasing flowbench numbers. As far as intake MSD out of the box is the best bang for the buck IMO.

 

What has the car run?

 

I had WCCH port my LS7 heads. We also replaced the OEM hollow stem sodium stainless valve with a lightweight Ferrea stainless valve. I used the FAST intake and a Katech cam. It runs well. However, on Corvette Forum the Tony Mamo heads and MSD intake combo are making more power. He is not using GM LS7 heads, but something aftermarket.

 

I do have tumble polished intake valves & stainless exhaust valves. But my heads are not milled, or ported.

 

There not much anywhere left to go with the ls7 n/a on 93 pump gas after a ported MSD/102 TB and cam added if you want to keep it 93 octane. If you really want to lower ET's the cheapest way possible think about get some CR into that thing and if you were to change heads get something that will raise you to 14:1 CR and run on e85.. then move to a much larger cam which will work with the higher CR and also a ported MSD intake if funds allow.

Most of the best n/a unofficial ls records (ls7's included) have been done by using high CR and big cams and often on stock bottom end.

Porting the stock corvette ls7 heads might gain a little but if whoever does it hasn't proven their work you might not gain anything or just not enough to offset the cost. High CR, big camshaft (a proven grind) is a sure thing.

Otherwise if you wanted a 93 pump gas n/a all out effort then buy a 600ci aluminum BBC. One area where big blocks excel over a small block IMO is on low compression. You won't see too many true 93 octane n/a small blocks in the 8's 1/4 mile, of course some very few have, but they all out efforts and $$$ from very experienced builders.

A 598ci bbc with SR20's or better can make 1k HP n/a on 93 octane. Again $$$.

And there is the reason so many boosted 5.3's and 6.0's LS's. Spend 7k max on a proper turbo kit around the engine and you're going 8's 1/4 with $500 engines.

 

bada13 id bump compression but then depending on the cam you might have to fly cut your pistons which isnt hard really..my camaro i posted above has .1 cuts on the stock pistons on both the intake and exhaust side..remember with a big cam you bleed off some of the static compression so you can tend to run more then normal..my camaro once i toss the milled 799s on will be 11.8-1 comp an still be a pump 93 motor..cam is a 243/251 112+2 deal..back in 2005 i had a 327 bored 30 over with trw pistons for 13-1 compression and i ran it on pump with a .690 lift solid roller..i did pull some timing on that motor just for safety..when i put it on race gas i could give it a extra 5 degrees of timing but it ran good went 6.50s in a gutted 4th gen i had back then.

 

Find that stating whats truely wanted narrows down things. Hp, et, more hp than what you have now ........Theres a few proven combos. Look how Old this is.....B. Tooley posted and is here on YB. He may know a few tricks and aftermarket heads may not be needed. We've come a Long since this thread.


https://ls1tech.com/forums/generati...ion-iv-internal-engine/481983-we-did-over-620-rwhp-532-rwtq-lg-motorsports.html

 

Video says it all stock Ls7 heads... Tanner ports and fixexs Ls7 heads(good dude and honest). 93 oct. 600 rwhp? LMAO. Who you know makes things easier.

https://ls1tech.com/forums/generation-iv-internal-engine/1855494-ported-ls7-heads-4.html

 

What track do you run at?

 

I used to run at AIR when i lived in that state. Haven't run the camaro at a track yet. Just messing around with the g-tech so far on a private road

 

iwould not waste any money on a th350. We have dynoed cars going from 4l60e and alum stock driveshafts to TH400s with aluminum direct drums and steel driveshaft and actually made a couple MORE hp.

The only thing that would make appreciably more power is a Pro-Flite but your talking a $7000 trans.

Way more to be had in other areas, like the converter. We have a Ultimate piece that has kicked ass in everything it has been in, low 10s cam only LS1 to 9s cam only LS3

 

Funny because years ago i did some research on th350 versus th400 and a lot of guys with old school chevs pontiacs etc had not gone any noticeably slower switching from 350 to 400. So i decided to just run 400's ever since.

As for 4l60, pfft. Do any not slip in top gear? That's if they're still running. lol. Not to mention the shift times. A good full manual 400 shifts instant.

 

No i dont think there is a gain from one to another for th350 vs th400..i have a th400 in my notch..only reason id use a 9" tail th350 is me being a cheap ass an not having to get a drive shaft made..i thought about swapping the notch to a 1.80 coan glide but then id need a driveshaft cut for that lol...motor wont make but like 530hp so a 575/600hp rated th350 should work..ive had decentvluck with th350 back in the day.

 

If you search driveshafts on ebay and the length you need sometimes there's a good cheap s/h one. For example i found a M/W shaft that would work (just) with my long tail Th400 and S60 but i already had one that works. I was thinking to buy it as spare but i doubt i'll be breaking a full chrome moly shaft. https://www.ebay.com/itm/Mark-Willi...-25-Drive-Shaft-3-5-OD-Blue/292158164863?hash=item4405fbcf7f:g:WigAAOSwAO9ZSXu7

Sometimes there's ex nascar 4" diameter ones very cheap also in all different lengths.