97blkz

iTrader: (1)

what sucks is the only way to compare them truly is buy a set, dyno and take it to the track , Then buy another set put on the same car and see what difference there is with changeing nothing else!

JB95Z28

Anybody know about patriot blue print heads for an lt1. I can get a set brand new to bolt on for about $1000. Just curious as to how good they were.

Puck

iTrader: (17)

AFR has pretty much all markets covered, from the small street 195 head to the massive 235s .

pillarpod

There was a thread way back in the day, they went to port them at the walls were so thin they broke through

93M6Formula

A 7 year old thread...sweet.

Ed Wright

iTrader: (1)

Only way to know would be to back-to-back them on an engine dyno, same day.
Same thing at the track. And, yes guys do that at the track.

Btw, flow benches vary so much, seeing a flow sheet means nothing at all.

Puck

iTrader: (17)

LMAO I checked last post date, which was recent, but never checked OP.

Exactly. My heads on the bench they were ported on flowed 330. I milled 5cc's off the chamber and had them flowed on my local bench, with a clay fixture and no pipes, and they did 315. No clue what lost/gained any CFM since I don't know the fixture type, material, or pipe length of the original bench used...I could have lost 15cfm from the mill and the benches were similar, only lost 5cfm from mill and new bench just reads 10cfm lower, or not lost anything and just had a stingy bench. Hell, the first bench could have been at 26" instead of 28" and my 315@28"=326 @ 26" so I only lost ~4cfm from the mill .

Flow numbers are only useful compared to the same physical bench, using the same test pressure.

1live95

So true! A while back I was testing several SBC production open chamber heads for a circle track class of cars, all where 70cc chamber, 1.94/1.50 valves with multi angle valve jobs and stock ports. 2 particular sets flowed with in 10cfm of each other but when I dyno test tested them one pair was 70hp better than the other. Both were tested on the same day on the same short block with the same intake and carb. That's when I realized the flow bench doesn't tell the whole story.

BrandonB

NewOrleansLT1

AFR's out the box. 11.98@115 1.68 60ft with pacesster mids and HOT CAM..

Barton101

FOR a mild build 400hp 500hp still a comfortable streetable car just have lloyed Elliot port your heads and intake with bigger valves and you got a fast car.. I know this is a 2006 post... Forums are dead😁

01Z0H6

iTrader: (63)

I second Lloyd Elliot... He is the LTX guru...

SS RRR

iTrader: (2)

LOL. By default. He became the "guru" when the few others who were better stopped doing LT1 combos.

F14D

Pretty low remark. We are very fortunate to still have someone of Lloyd's caliber and customer service porting heads and designing cams for our outdated, unloved, gen 2s.

Fast355

Knowing how much power my 383 makes with Lloyds head work and knowing his work, works very well his is easy to recomeend.

Z28Roxy

iTrader: (4)

Think AI still does LTx heads too, I spoke to them but went with LE.

BFromTheD

The problem with this argument is that the answer you get from guys is going to be based on whoever they shopped with. Most guys have not run both so their opinion is going to be biased one way or another. Also a lot of the answers in this post referenced heads that have had extensive work done by the induction specialist of their choice.

If you are going to get a guy to redo the whole port, put their valve job on it, suggest different springs/valves, etc....you might as well send them a pro port and let them do it from scratch with an AFR/Trick Flow casting.

SS RRR

iTrader: (2)

It's from years of dyno numbers, track times and customer service from different shops when that used to be a thing when members would work on, dyno and race their cars..

That would be great if their turn around time is realistic. It wasn't too long ago where they were ignoring phone calls and e-mails of those who were inquiring about LT1 stuff. I do believe someone here did get ahold of them and they said LT1 **** was the lowest of their priorities, at least at that specific time (a few years ago). Another shame is Craig with GTP, whose heads were very high caliber, but once he got too popular his customer service went to ****. I'd take his heads any day of the week even on a Friday over LE.

01Z0H6

iTrader: (63)

There has to be a point here somewhere....? He's still turning wrenches on LTX platform. Guess the "others" moved on to that almighty LSX platform. lol

SS RRR

iTrader: (2)

Yes. Bigger and better, more money making opportunities. Shame on them.

BFromTheD

Crazy it took all this time for the gen 2 to get a race block. Zero chance a lot of these shops and companies do a 180 and start doing LT1 stuff but it will be interesting to see how far some of these guys push the platform with more options. Its amazing that Grubbworm was able to go so fast with a stock block.