Sources for 327 mods?
Thread Starter
Racer
Joined: Nov 2001
Posts: 379
Likes: 0
From: Helsinki
Sources for 327 mods?
Does anybody know any good sources of 327 engine modifications? I´m trying to find info on streetable cam / head / header / carb combos. All pages I can find are based on more popular 350 or 383 engines, even this very informative site doesn´t have any 327 combos:
http://www.ryanscarpage.50megs.com/combos.html
Any help is appreciated.
http://www.ryanscarpage.50megs.com/combos.html
Any help is appreciated.
Drifting
Joined: Nov 2000
Posts: 1,477
Likes: 4
From: Florida 33460
Re: Sources for 327 mods? (tapio)
I believe there are no more "kits" for 327 in the market because lack of volume of those old short stroke smallblocks. However all 283-400 cid engine components work well for your 327. Just stay away from large cylinderheads (intakes over 170cc) and stick with smalltube headers and dualplane intake(like factory 340hp) When you have chosen all parts ,contact your local speedshop and order custom grind camshaft for your engine combo and car.This way you wont loose torque and driveability wich easily happens with 327
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: Sources for 327 mods? (tapio)
327,331,336's are all wonderful motors. You build them just like the 350,355 motors. You just have to remember that all power figures are going to be ruffly 15% less with all things being equal.
with an equal duration cam a 331 will produce its peak TQ. @ 300 rpm higher than a 355
with an equal duration cam a 331 will produce its peak TQ. @ 300 rpm higher than a 355
Safety Car
Joined: Feb 1999
Posts: 3,631
Likes: 14
From: Fountain Hills AZ
Re: Sources for 327 mods? (tapio)
As already posted, the same tech that applies to 350's also applies to 327's. The difference in cubes, about 9%, should be taken in consideration in cam/head/carb/exhaust selection. The difference in displacement (as a percentage) between the 327 and the 350 is almost identical to the difference between a 350 and a 383. If the goal is to build a 327 to the same state of tune as a given 350, a slightly smaller carb/cam/etc. is needed. Looking at it another way, using the same parts (such as one of the head/cam/intake "packages" offered) on a 327 will result in a slightly more "radical" engine.
Thread Starter
Racer
Joined: Nov 2001
Posts: 379
Likes: 0
From: Helsinki
Re: Sources for 327 mods? (Vetterodder)
Thanks for comments.
One more point:
Given the shorter stroke on a 327, would basic components allow for more RPM to compensate the smaller displacement without failure? How the basic loads in a engine differ from 327 to 350? If the stroke is shorter, then the average piston speed is lower at a given RPM level, and the loads must be lower. I mean, can I spin 327 faster than 350 with same components safely (if the valve springs & lifters allow high RPM)? This question may sound stupid, but I´ve heard so many different answers that I would like to hear your opinions.
One more point:
Given the shorter stroke on a 327, would basic components allow for more RPM to compensate the smaller displacement without failure? How the basic loads in a engine differ from 327 to 350? If the stroke is shorter, then the average piston speed is lower at a given RPM level, and the loads must be lower. I mean, can I spin 327 faster than 350 with same components safely (if the valve springs & lifters allow high RPM)? This question may sound stupid, but I´ve heard so many different answers that I would like to hear your opinions.
Melting Slicks
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
Re: Sources for 327 mods? (tapio)
Yes you can spin a shorter stroke engine higher with similar loads/stresses as longer stroke at a lower RPM. Another way to look at is piston speed.
I've heard of folks back in the day (before my time) running stock 302's (3 inch stroke) to 8000 rpm with only a valve spring change...now whether it made any more power up there and one knows how old stories get embellished...:)
I've heard of folks back in the day (before my time) running stock 302's (3 inch stroke) to 8000 rpm with only a valve spring change...now whether it made any more power up there and one knows how old stories get embellished...:)
