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View Poll Results: 400 small block vs 351 small block
400 small block chevy 10 90.91%
351 small block ford 1 9.09%
Voters: 11. You may not vote on this poll

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  #16 (permalink)  
Old 05-13-2006, 01:02 PM
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Quote:
Originally Posted by Rick WI
Given he is stroking it cubic inches should be close. Given the generally better overall cylinder head selelction with small block Fords right now if he chooses the right head and you don't your toast.

It's not difficult to find small block Ford cylinder heads that flow well over 300 CFM. Not that easy to achieve with ancient 23 degree technology small block Chevy heads.
The heads I'm running is a Jegs racing aluminum head.I'm really not sure on the head he is running.I thought about going to AFR heads.The heads I have have a 197cc runners,and 2.05 1.60 valves.I was told the Jegs heads flow very good,never ran them though.The cam I am using is a comp roller with 600" lift on the intake and exhaust(hydraulic).I'm not sure on the cam he is going to run,I'm going to ask about the heads,and cam he is runnig.I will post as soon as I find out.Should I go with the AFR,or go with the Jegs heads I just bought?Has anyone ever ran these?

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Old 05-13-2006, 06:46 PM
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here is a flow chart on my Jegs heads vs AFR

I just wanted to post a chart of the Jegs heads and the AFR.O know if I go with a bigger runner AFR they will definitely flow alot better or should I stick with the heads I got
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Old 05-13-2006, 10:19 PM
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We all fall into the airflow debate at some point. Here's a couple articles to keep things in perspective.

The Truth About Airflow and Horsepower By Brian Tooley
http://totalengineairflow.com/tech/truthabout.php
Flow Bench Fallacies by David Reher
http://www.rehermorrison.com/techTalk/16.htm
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Old 05-13-2006, 11:10 PM
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Give me a shout when you guys head to the track, I live in memphis and spend a lot of time there. Would like to see the end result.
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Old 05-13-2006, 11:47 PM
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Originally Posted by DaSouthWon
Give me a shout when you guys head to the track, I live in memphis and spend a lot of time there. Would like to see the end result.
I'll do that hope it want be long.
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Old 05-13-2006, 11:53 PM
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Quote:
Originally Posted by Brian S
We all fall into the airflow debate at some point. Here's a couple articles to keep things in perspective.

The Truth About Airflow and Horsepower By Brian Tooley
http://totalengineairflow.com/tech/truthabout.php
Flow Bench Fallacies by David Reher
http://www.rehermorrison.com/techTalk/16.htm
Thanks I have always heard the more flow the better (not always true.)These know what they are talking about
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Old 05-14-2006, 08:27 AM
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Flow matters, especially for the type of build your doing. If you don't care about flow install 887's and save a lot of money.
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Old 05-14-2006, 10:57 AM
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Quote:
Originally Posted by Rick WI
Flow matters, especially for the type of build your doing. If you don't care about flow install 887's and save a lot of money.
I have already bought the Jegs aluminum heads,I know they should work good with 400.This is the first set of aluminum I have ever installed on my on engine.I have always used 327 double hump heads that have been ported,I have also ran alot of 305 heads on 350,and they all ran really good.
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Old 05-14-2006, 11:31 AM
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Quote:
Originally Posted by dboyett38666
just a quick question me and my buddy are both building engines at the same time,and as soon as they are together where going to line them up,mine is a 70 camaro his is a 84 mustang.The engine I am building is a 400 small block chevy 4.185 bore 6 inch rods alumunium heads,the engine he is building is a 351 with some type of stroker kit in it not sure on that(FORD)what I was wondering which of these motors would you want to run heads up with?Both engines will have solid roller cams,and victor intakes,.I just want to know whats going to happen when we put these cars side by side. thanks for looking

That is impossible to say. It depends upon the entire combination package of each engine.

A 410 chevy and a 408 Ford can be equal power wise,

so the variables pass on the the cars and drivers. I think the stroke is irrevavent.

Extensive tests have shown the AFR 190s superior to even the bigger AFR heads as well as most every other head on the market. UNLESS it is a true race only engine for 6-8000 rpm.

I prefer AFRs across the board.

Last edited by xntrik; 05-14-2006 at 11:37 AM.
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Old 05-14-2006, 03:50 PM
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Jegs heads 1,596
AFR heads 1,900
I agree the AFR are probably the best heads on the market,and one of the highest.I know speed cost how fast do you want to go (with the money I got cant go to fast)I try though
thanks
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